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transactions of Nonferrous Metals Society of China 2019年第6期29卷 1127-1137页

作者： A.r.KHODABAKHSHI M.KAZEMINEZHAD Department of Materials Science and Engineering Sharif University of Technology

In order to investigate the evolution of microstructure and flow stress during non-isothermal annealing,aluminum samples were subjected to strain magnitudes of 1, 2 and 3 by performing 2, 4 and 6 passes of multi-directional forging. then, the samples were non-isothermally annealed up to 150, 200, 250, 300 and 350 ℃. the evolution of dislocation density and flow stress was studied via modeling of deformation and annealing stages. It was found that 2, 4 and 6 passes multi-directionally forged samples show thermal stability up to temperatures of 250, 250 and 300 ℃, respectively. Modeling results and experimental data were compared and a reasonable agreement was observed. It was noticed that 2 and 4 passes multi-directionally forged samples annealed non-isothermally up to 350 ℃ have a lower experimental flow stress in comparison with the flow stress achieved from the *** underlying reason is that the proposed non-isothermal annealing model is based only on the intragranular dislocation density evolution, which only takes into account recovery and recrystallization phenomena. However, at 350℃ grain growth takes place in addition to recovery and recrystallization,which is the source of discrepancy between the modeling and experimental flow stress.

关键词： severe plastic deformation multi-directional forging non-isothermal annealing dislocation density-based model microstructure mechanical properties

Storage capacity of complex Hopfield model

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Semiconductor Photonics and technology 1995年第1期1卷 35-42页

作者： SHUAI j W CHEW Z X LIU r t WU B X(Dept.of Physics,Xiamen University,Xiamen 361005,CHN)

the Dirac symbol is used to represent the discrete complex Hopfield neural network *** signal-to-noise theory and the computer numerical solution are made to analyse the storage capacity of the *** storage capacity ratio of the model equals to that of the Hopfield ***,using the model to recognize the 4-level grey or color patterns is discussed.

关键词： Neural Nets Computer Networks Pattern recognition Neurons

Surface tension of Molten Silicon Deduced from Wetting Experiments

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rare Metals 1993年第4期12卷 250-255页

作者：李建国 Institut fur Nichtmetallische Werkstoffe Technische Universitat BerlinEnglische Str.201000 Berlin 12FRG

the accurate measurements of the surface tension for molten silicon are not easy to be carried *** major problem comes from the fact that it is very difficult to avoid the contamination of silicon surface by oxygen arising from experimental atmosphere or from the starting *** determination of this physical property for liquid silicon is thus of *** the present work,wetting experiments have per- formed for molten silicon on very pure and dense glassy carbon substratc at oxygen partial pressures well below and above the saturation limit of oxygen in the liquid *** of the wetting results,together with the experimental results reported in the literature for the surface tension values of molten silicon,ena- ble the surface tension of pure and clean liquid silicon to bc deduced.

关键词： Liquid silicon Surface tensiond Oxygen Wetting Glassy carbon

Phylogeny of nucleus medianus of the posterior tubercle in ray-finned fishes

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Integrative Zoology 2009年第1期4卷 134-152页

作者： r.Glenn NOrtHCUtt Laboratory of Comparative Neurobiology Scripps Institution of Oceanographyand Department of NeurosciencesUniversity of CaliforniaLa JollaUSA

the brains of ray-finned fishes form a morphocline of increasing complexity,from cladistians through *** is particularly apparent in the posterior tubercle of the *** cladistians,the posterior tubercle consists of a periventricular nucleus and a migrated nucleus medianus that is fused across the *** more advanced ray-finned fishes,such as gars and bowfins,the posterior tubercle comprises numerous additional mi-grated nuclei,termed the preglomerular complex,in addition to a more well developed nucleus *** teleosts,the most derived ray-finned fishes,there is an even more elaborate preglomerular complex,but there is no recognizable nucleus *** an attempt to explain the variation in the posterior tubercle of the diencephalon in ray-finned fishes,the immunohistochemistry and connections of nucleus medianus were examined in cladistians,gars and *** each of these taxa,nucleus medianus exhibits large numbers of calretinin-positive neurons and has ascending projections that terminate in several divisions of the *** teleosts,such as goldfish,also exhibit numerous cell groups in the posterior tubercle that are rich in calretinin,none of these cell groups has connections that are comparable to those of nucleus medianus in non-teleost ray-finned *** is possible,therefore,that nucleus medianus was lost with the origin of teleosts.

关键词： bichirs evolution gars nucleus medianus posterior tubercle sturgeons.

桩基系统在地基液化和土体流动过程中的三维响应(英文)

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西北地震学报 2005年第1期27卷 22-29,35页

作者： SAtO t MAtSUMArU t MOON Y ZHANG F UZUOKA r 京都大学灾害防御研究所京都大学土木工程系三星集团土木工程部岐阜大学河流盆地研究中心东北大学土木工程系

松散的饱和砂土在液化之前可作为固体看待,但当过量的孔隙水压达到初始侧应力时它成为液体,之后又恢复其强度。这个过程不能各自单独处理,而应视为一个从固态到液态,或从液态到固态的连续变化过程。因此,整个伴随着地基液化———土体... 详细信息

松散的饱和砂土在液化之前可作为固体看待,但当过量的孔隙水压达到初始侧应力时它成为液体,之后又恢复其强度。这个过程不能各自单独处理,而应视为一个从固态到液态,或从液态到固态的连续变化过程。因此,整个伴随着地基液化———土体流动现象全过程应作为一个在固态和液态之间相变的系列过程。本文导出了一个简单的基本方程式,可以表达松散饱和砂土在液化和地基侧向滑移现象期间的固-液相转换。该基本方程式可用作桩基系统的动力分析,其适用性通过与弹塑性基本方程的比较得到验证。

关键词：桩基液化土体流动现象有效应力分析

Application of the finite element method for evaluating the stress distribution in buried damaged polyethylene gas pipes

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Underground Space 2019年第1期4卷 59-71页

作者： r.Khademi-Zahedi Shahid Chamran University of Ahvaz AhvazIran

During the loading process,buried gas pipes can experience severe stresses due to soil-structure interaction,the presence of traffic load,the soil’s column weight,daily and/or seasonal temperature changes and uniform internal *** this research,the finite element method is employed to evaluate the behavior of buried Medium Density Polyethylene(MDPE)pipes which have been subjected to damage at the pipe *** modeled pipe damage ranges from a very small circular hole to a large circular hole and elliptic holes with various minor to major diameter ratios,a/b,to simulate circular to crack-shaped *** computer simulation and stress analyses were performed using the ANSYS software finite element *** stress distribution around the defect was determined under the aforementioned mechanical and thermal loading ***,the maximum values of Von Mises stresses in the damaged buried PE pipes,which were evaluated by finite element solution,were compared with their corresponding reduced strength for safe operation with a life expectancy of fifty *** on the results,the maximum Von Mises stress values in the defective buried polyethylene gas pipeline are significantly above the pipe strength limit at 35℃.the previously mentioned stress values increase with the following factors:temperature increase,increase in circular hole diameter and decrease in elliptic hole diameter ratio(a/b).the maximum stress in the damaged PE pipe is due to the simultaneous loading effects of soil column weight,internal pressure,vehicle wheel load and pipe temperature ***,the novel finite element models and stress plots for the buried damaged pipe and the pipe material allowable strength will be used to investigate the correct repair method for the damaged gas pipeline and to choose the best patch arrangement which will assure a safe repair.

关键词： Buried gas distribution pipes Circular and elliptical defects Medium Density Polyethylene(MDPE) Von Mises stress Finite element method temperature variation

Systolic and Diastolic Strain Measurements Show Left Ventricular Dysfunction in Women with turner Syndrome

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Congenital Heart Disease 2021年第4期16卷 357-368页

作者： Allard t.van den Hoven Sultan Yilmazer Lidia r.Bons roderick W.jvan Grootel L.W.Geenen An M.van Berendoncks Anthonie L.Duijnhouwer Hans-Marc j.Siebelink jolien W.roos-Hesselink Annemien E.van den Bosch Department of Congenital Cardiology Erasmus MCRotterdamNetherlands Department of Cardiology Radboud University Medical CenterNijmegenNetherlands Department of Cardiology Leiden University Medical CenterRotterdamNetherlands

Aim:this study aimed to describe the systolic left ventricular global longitudinal strain(LvGLS)and left ventricular peak early diastolic strain rate(Sre)in adult women with turner syndrome(tS)and to determine its relationship with exercise capacity and clinical ***:In this cross-sectional cohort study,consecutively included adult tS women underwent an electrocardiogram,transthoracic echocardiogram(ttE)and cardiopulmonary exercise test(CPEt)on the same *** and Sre were measured using 2D speckle tracking analysis(StE)and compared with age-matched healthy female ***:Ninety-four adult women(age 36±13 years)with tS and 32 healthy age-matched female controls were *** with tS had a significantly impaired/reduced systolic LvGLS(–17.82±2.98%vs.–21.80±1.85%,pre(0.98±0.32 s-1 vs.1.27±0.19 s-1,p>0.001),compared to healthy female ***,tS women had reduced diastolic function as measured by conventional echocardiographic parameters:A higher A-wave(pr E/A-ratio(p=0.001),longer deceleration time(p=0.006),and a higher E/E’-ratio(pth tS also had a significantly reduced maximal workload(p=0.033),reduced oxygen uptake(preduced maximal heart rate(pring *** linear regression analysis revealed that Age,karyotype and Qt-duration were significantly associated with Sre,but not with LvGLS,in the tS ***:Systolic and diastolic strain and exercise capacity were significantly reduced in tS women compared to healthy *** correlation between strain itself and exercise capacity could be demonstrated,but correlations with conventional ttE parameters and baseline characteristics were found.

关键词： turnersyndrome speckletracking echocardiography strain exercise capacity

Use of light-emitting diode(LED)lamps in combination with metal halide(MH)lamps reduce fuel consumption in the Vietnamese purse seine fishery

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Aquaculture and Fisheries 2021年第4期6卷 432-440页

作者： Khanh Q.Nguyen Phu D.tran Luong t.Nguyen Phuong V.to Corey j.Morris Nha trang University 2 Nguyen Dinh ChieuNha TrangViet Nam Fisheries and Oceans Canada St.John’sNL A1C 5X1Canada

the use of high-power lights during night-time purse seining is common in ***,metal halide(MH)lamps are used in the commercial fishery to attract fish,however these lights require more energy,have a shorter lifespan,and lower chromatic performance than light emitting diode(LED)*** study examined catch efficiency and fuel consumption when using LED lamps in combination with reduced numbers of MH lamps(10.24 kW),compared to conventional lighting(28.6 kW),used during purse seining off the coast of Ninh thuan province,*** economic performance associated with using LED lamps in this fishery was also *** found no significant differences in catch rates between the different light treatments,however fuel consumption was significantly *** consumption per nightly trip using LED with MH lamps was 70.8 l(11.1 l/h)compared to114 l(17.45 l/hr)using MH lamps alone,an estimated 37.9%reduction in fuel *** investment in LED lamps by a fishing enterprise will require additional initial costs,however our analysis revealed the financial break-event point can be reached after approximately 101 nightly trips when the fuel price is at the 2015 level of USD$0.74 per *** enterprises can increase their profitability,and reduce CO2 emissions,by using LED lamps in the Vietnamese purse seine fishery.

关键词： LED light Purse seine fishery Fuel consumption Catch comparison Economic efficiency

rEVIEW OF PArtICLE PHYSICS

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Chinese Physics C 2014年第9期38卷 1-4页

作者： K.A.Olive K.Agashe C.Amsler M.Antonelli j.-F.Arguin D.M.Asner H.Baer H.r.Band r.M.Barnett t.Basaglia C.W.Bauer j.j.Beatty V.I.Belousov j.Beringer G.Bernardi S.Bethke H.Bichsel O.Biebe E.Blucher S.Blusk G.Brooijmans O.Buchmueller V.Burkert M.A.Bychkov r.N.Cahn M.Carena A.Ceccucci A.Cerr D.Chakraborty M.-C.Chen r.S.Chivukula K.Copic G.Cowan O.Dahl G.D'Ambrosio t.Damour D.de Florian A.de Gouvea t.DeGrand P.de jong G.Dissertor B.A.Dobrescu M.Doser M.Drees H.K.Dreiner D.A.Edwards S.Eidelman j.Erler V.V.Ezhela W.Fetscher B.D.Fields B.Foster A.Freitas t.K.Gaisser H.Gallagher L.Garren H.-j.Gerber G.Gerbier t.Gershon t.Gherghetta S.Golwala M.Goodman C.Grab A.V.Gritsan C.Grojean D.E.Groom M.Grnewald A.Gurtu t.Gutsche H.E.Haber K.Hagiwara C.Hanhart S.Hashimoto Y.Hayato K.G.Hayes M.Heffner B.Heltsley j.j.Hernandez-rey K.Hikasa A.Hocker j.Holder A.Holtkamp j.Huston j.D.jackson K.F.johnson t.junk M.Kado D.Karlen U.F.Katz S.r.Klein E.Klempt r.V.Kowalewski F.Krauss M.Kreps B.Krusche Yu.V.Kuyanov Y.Kwon O.Lahav j.Laiho P.Langacker A.Liddle Z.Ligeti C.-j.Lin t.M.Liss L.Littenberg K.S.Lugovsky S.B.Lugovsky F.Maltoni t.Mannel A.V.Manohar W.j.Marciano A.D.Martin A.Masoni j.Matthews D.Milstead P.Molaro K.Monig F.Moortgat M.j.Mortonson H.Murayama K.Nakamura M.Narain P.Nason S.Navas M.Neubert P.Nevski Y.Nir L.Pape j.Parsons C.Patrignani j.A.Peacock M.Pennington S.t.Petcov Kavli IPMU A.Piepke A.Pomarol A.Quadt S.raby j.rademacker G.raffel B.N.ratcliff P.richardson A.ringwald S.roesler S.rolli A.romaniouk L.j.rosenberg j L.rosner G.rybka C.t.Sachrajda Y.Sakai G.P.Salam S.Sarkar F.Sauli O.Schneider K.Scholberg D.Scott V.Sharma S.r.Sharpe M.Silari t.Sjostrand P.Skands j.G.Smith G.F.Smoot S.Spanier H.Spieler C.Spiering A.Stahl t.Stanev S.L.Stone t.Sumiyoshi M.j.Syphers F.takahashi M.tanabashi j.terning L.tiator M.titov N.P.tkachenko N.A.tornqvist D.tovey G.Valencia G.Venanzoni M.G.Vincter P.Vogel A.Vogt S.P.Wakely W.Walkowiak C.W.Walter D.r.Ward G.Weiglein D.H.Weinberg E.j.Weinberg M.White L.r.Wiencke C.G.Wohl L.Wolfenstein j.Womersley C.L. University of Minnesota School of Physics and Astronomy116 Church St.S.E.MinneapolisMN 55455USA University of Maryland Department of PhysicsCollege ParkMD 20742-4111USA Albert Einstein Center for Fundamental Physics Universitat BernCH-3012 BernSwitzerland Lab.Nazionali di Frascati dell'INFN CP 13via E.Fermi40I-00044 Frascati(Roma)Italy Departement de physique Universite de MontrealC.P.6128succ.centre-villeMontreal(Quebec) H3C 3J7Canada Pacific Northwest National Laboratory 902 Battelle BoulevardRichlandWA 99352USA Department of Physics and Astronomy University of OklahomaNormanOK 73019USA Department of Physics University of WisconsinMadisonWI 53706USA Physics Division Lawrence Berkeley National Laboratory1 Cyclotron RoadBerkeleyCA 94720USA CErN European Organization for Nuclear ResearchCH-1211 Geneve 23Switzerland Department of Physics The Ohio State University191 W.Woodruff Ave.ColumbusOH 43210 COMPAS Group Institute for High Energy PhysicsRU- 142284ProtvinoRussia LPNHE IN2P3-CNRS et Universites de Paris 6 et 7F-75252 ParisFrance Max-Planck-Institute of Physics 80805 MunichGermany Department of Physics University of WashingtonSeattleWA 98195USA Ludwig-Maximilians-Universitat Fakultdt für PhysikSchellingstr.4D-80799 MünchenGermany Enrico Fermi Institute and Department of Physics University of ChicagoChicagoIL 60637-1433USA Department of Physics Syracuse UniversitySyracuseNY13244USA Department of Physics Columbia University538 W.120th StreetNew YorkNY10027 USA High Energy Physics Group Blackett LaboratoryImperial CollegePrince Consort RoadLondon SW7 2AZUK jefferson Lab 12000 Jefferson Ave.Newport NewsVA 23606USA Department of Physics University of VirginiaPO Box 400714CharlottesvilleVA 22904USA Fermi National Accelerator Laboratory P.O.Box 500BataviaIL 60510USA Kavli Institute for Cosmological Physics University of ChicagoChicagoIL 60637-1433USA Department of Physics and Astronomy University of SussexFalmerBrighton BN1 9QHUK Department o

the review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as heavy neutrinos, supersymmetric and technicolor particles, axions, dark photons, etc. All the particle properties and search limits are listed in Summary tables. We also give numerous tables, figures, formulae, and reviews of topics such as Supersymmetry, Extra Dimensions, Particle Detectors, Probability, and Statistics. Among the 112 reviews are many that are new or heavily revised including those on： Dark Energy, Higgs Boson Physics, Electroweak Model, Neutrino Cross Section Measurements, Monte Carlo Neutrino Generators, top Quark, Dark Matter, Dynamical Electroweak Symmetry Breaking, Accelerator Physics of Colliders, High-Energy Collider Parameters, Big Bang Nucleosynthesis, Astrophysical Constants and Cosmological Parameters. A booklet is available containing the Summary tables and abbreviated versions of some of the other sections of this full review. All tables, listings, and reviews （and errata） are also available on the Particle Data Group website： http ：//pdg. lbl. gov.

关键词： rEVIEW OF PArtICLE PHYSICS

Development and characterization of photovoltaic tandemjunction nanowires using electron-beam-induced current measurements

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Nano research 2022年第9期15卷 8510-8515页

作者： Lukas Hrachowina Enrique Barrigón Magnus t.Borgström NanoLund and Divison of Solid State Physics Lund UniversityBox 11822100 LundSweden Universidad de Málaga Andalucía TechDepartamento de Física Aplicada ⅠCampus de Teatinoss/nMálaga 29071Spain

Nanowires have many interesting properties that are of advantage for solar cells,such as the epitaxial combination of latticemismatched materials without plastic *** could be utilized for the synthesis of axial tandem-junction nanowire solar cells with high efficiency at low material ***-beam-induced current measurements have been used to optimize the performance of single-junction nanowire solar ***,we use electron-beam-induced current measurements to break the barrier to photovoltaic tandem-junction *** particular,we identify and subsequently prevent the occurrence of a parasitic junction when combining an InP n-i-p junction with a tunnel ***,we demonstrate how to use optical and electrical biases to individually measure the electron-beam-induced current of both sub-cells of photovoltaic tandem-junction *** show that with an applied voltage in forward direction,all junctions can be analyzed *** development of this characterization technique enables further optimization of tandem-junction nanowire solar cells.

关键词： Ⅲ-Ⅴnanowire nanowire solar cell tandem-junction Esaki tunnel diode electron-beam induced current(EBIC)